M15, How Old Are You? (2009)
This fall, John Weiss and I decided to try to use CCD images to determine the age of star clusters. This is a project I’d tried before but hadn’t had much success with, mostly because last year, Cindy and I had had trouble getting decent images of the clusters and so had been unable to move on to image analysis. This time, I wanted to see if I could actually find something.